3- Score the sheet with an X-acto then break it in stripes, and then break each stripe in squares (don’t trow the leftover pieces to the trash: they can be used as rubble or broken tiles on other bases!).

4- With the X-acto, dull the sharp angles of the little squares and create some cracks and dents.

5- Use white glue to secure the pieces to a mini base.

6- NEW! I used a small metal bit I bought from an art store (these are sold to decorate scrapbooks). They are perfect to simulate intricate details in small-scale architecture, like here.